When neutral disconnects, there is chance of voltage shooting upto 440V, but that also if there is load imbalance in any of the phase.
Recently some Discoms are testing for this feature in solar plant as mandatory part for #netmetering. they test by removing neutral wire and checking if the inverter trips.
We can offer this feature in our product OVCD and Equipower. it is in built
The demo video shows how the unit trips if the neutral wire is disconnected.
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